[llvm] Reland [llvm] Add support for llvm IR atomicrmw fminimum/fmaximum instructions (PR #137701)
via llvm-commits
llvm-commits at lists.llvm.org
Wed Apr 30 05:52:54 PDT 2025
================
@@ -43,3 +43,296 @@ define float @test_atomicrmw_fsub_f32(ptr %ptr, float %value) {
ret float %res
}
+define float @atomicrmw_fmin_float(ptr %ptr, float %value) {
+; CHECK-LABEL: @atomicrmw_fmin_float(
+; CHECK-NEXT: [[TMP1:%.*]] = load float, ptr [[PTR:%.*]], align 4
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi float [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call float @llvm.minnum.f32(float [[LOADED]], float [[VALUE:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast float [[TMP2]] to i32
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast float [[LOADED]] to i32
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i32 [[TMP4]], i32 [[TMP3]] seq_cst seq_cst, align 4
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i32, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i32, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i32 [[NEWLOADED]] to float
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret float [[TMP6]]
+;
+ %res = atomicrmw fmin ptr %ptr, float %value seq_cst
+ ret float %res
+}
+
+define float @atomicrmw_fmax_float(ptr %ptr, float %value) {
+; CHECK-LABEL: @atomicrmw_fmax_float(
+; CHECK-NEXT: [[TMP1:%.*]] = load float, ptr [[PTR:%.*]], align 4
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi float [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call float @llvm.maxnum.f32(float [[LOADED]], float [[VALUE:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast float [[TMP2]] to i32
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast float [[LOADED]] to i32
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i32 [[TMP4]], i32 [[TMP3]] seq_cst seq_cst, align 4
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i32, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i32, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i32 [[NEWLOADED]] to float
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret float [[TMP6]]
+;
+ %res = atomicrmw fmax ptr %ptr, float %value seq_cst
+ ret float %res
+}
+
+define double @atomicrmw_fmin_double(ptr %ptr, double %value) {
+; CHECK-LABEL: @atomicrmw_fmin_double(
+; CHECK-NEXT: [[TMP1:%.*]] = load double, ptr [[PTR:%.*]], align 8
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi double [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call double @llvm.minnum.f64(double [[LOADED]], double [[VALUE:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast double [[TMP2]] to i64
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast double [[LOADED]] to i64
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i64 [[TMP4]], i64 [[TMP3]] seq_cst seq_cst, align 8
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i64, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i64, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i64 [[NEWLOADED]] to double
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret double [[TMP6]]
+;
+ %res = atomicrmw fmin ptr %ptr, double %value seq_cst
+ ret double %res
+}
+
+define double @atomicrmw_fmax_double(ptr %ptr, double %value) {
+; CHECK-LABEL: @atomicrmw_fmax_double(
+; CHECK-NEXT: [[TMP1:%.*]] = load double, ptr [[PTR:%.*]], align 8
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi double [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call double @llvm.maxnum.f64(double [[LOADED]], double [[VALUE:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast double [[TMP2]] to i64
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast double [[LOADED]] to i64
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i64 [[TMP4]], i64 [[TMP3]] seq_cst seq_cst, align 8
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i64, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i64, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i64 [[NEWLOADED]] to double
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret double [[TMP6]]
+;
+ %res = atomicrmw fmax ptr %ptr, double %value seq_cst
+ ret double %res
+}
+
+define float @atomicrmw_fminimum_float(ptr %ptr, float %value) {
+; CHECK-LABEL: @atomicrmw_fminimum_float(
+; CHECK-NEXT: [[TMP1:%.*]] = load float, ptr [[PTR:%.*]], align 4
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi float [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call float @llvm.minimum.f32(float [[LOADED]], float [[VALUE:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast float [[TMP2]] to i32
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast float [[LOADED]] to i32
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i32 [[TMP4]], i32 [[TMP3]] seq_cst seq_cst, align 4
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i32, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i32, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i32 [[NEWLOADED]] to float
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret float [[TMP6]]
+;
+ %res = atomicrmw fminimum ptr %ptr, float %value seq_cst
+ ret float %res
+}
+
+define float @atomicrmw_fmaximum_float(ptr %ptr, float %value) {
+; CHECK-LABEL: @atomicrmw_fmaximum_float(
+; CHECK-NEXT: [[TMP1:%.*]] = load float, ptr [[PTR:%.*]], align 4
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi float [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call float @llvm.maximum.f32(float [[LOADED]], float [[VALUE:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast float [[TMP2]] to i32
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast float [[LOADED]] to i32
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i32 [[TMP4]], i32 [[TMP3]] seq_cst seq_cst, align 4
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i32, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i32, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i32 [[NEWLOADED]] to float
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret float [[TMP6]]
+;
+ %res = atomicrmw fmaximum ptr %ptr, float %value seq_cst
+ ret float %res
+}
+
+define double @atomicrmw_fminimum_double(ptr %ptr, double %value) {
+; CHECK-LABEL: @atomicrmw_fminimum_double(
+; CHECK-NEXT: [[TMP1:%.*]] = load double, ptr [[PTR:%.*]], align 8
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi double [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call double @llvm.minimum.f64(double [[LOADED]], double [[VALUE:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast double [[TMP2]] to i64
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast double [[LOADED]] to i64
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i64 [[TMP4]], i64 [[TMP3]] seq_cst seq_cst, align 8
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i64, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i64, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i64 [[NEWLOADED]] to double
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret double [[TMP6]]
+;
+ %res = atomicrmw fminimum ptr %ptr, double %value seq_cst
+ ret double %res
+}
+
+define double @atomicrmw_fmaximum_double(ptr %ptr, double %value) {
+; CHECK-LABEL: @atomicrmw_fmaximum_double(
+; CHECK-NEXT: [[TMP1:%.*]] = load double, ptr [[PTR:%.*]], align 8
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi double [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call double @llvm.maximum.f64(double [[LOADED]], double [[VALUE:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast double [[TMP2]] to i64
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast double [[LOADED]] to i64
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i64 [[TMP4]], i64 [[TMP3]] seq_cst seq_cst, align 8
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i64, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i64, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i64 [[NEWLOADED]] to double
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret double [[TMP6]]
+;
+ %res = atomicrmw fmaximum ptr %ptr, double %value seq_cst
+ ret double %res
+}
+
+define bfloat @atomicrmw_fmaximum_bfloat(ptr %ptr, bfloat %val) {
+; CHECK-LABEL: @atomicrmw_fmaximum_bfloat(
+; CHECK-NEXT: [[TMP1:%.*]] = load bfloat, ptr [[PTR:%.*]], align 2
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi bfloat [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call bfloat @llvm.maximum.bf16(bfloat [[LOADED]], bfloat [[VAL:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast bfloat [[TMP2]] to i16
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast bfloat [[LOADED]] to i16
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i16 [[TMP4]], i16 [[TMP3]] seq_cst seq_cst, align 2
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i16, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i16, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i16 [[NEWLOADED]] to bfloat
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret bfloat [[TMP6]]
+;
+ %res = atomicrmw fmaximum ptr %ptr, bfloat %val seq_cst
+ ret bfloat %res
+}
+
+define half @atomicrmw_fmaximum_half(ptr %ptr, half %val) {
+; CHECK-LABEL: @atomicrmw_fmaximum_half(
+; CHECK-NEXT: [[TMP1:%.*]] = load half, ptr [[PTR:%.*]], align 2
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi half [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call half @llvm.maximum.f16(half [[LOADED]], half [[VAL:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast half [[TMP2]] to i16
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast half [[LOADED]] to i16
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i16 [[TMP4]], i16 [[TMP3]] seq_cst seq_cst, align 2
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i16, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i16, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i16 [[NEWLOADED]] to half
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret half [[TMP6]]
+;
+ %res = atomicrmw fmaximum ptr %ptr, half %val seq_cst
+ ret half %res
+}
+
+define <2 x half> @atomicrmw_fmaximum_2_x_half(ptr %ptr, <2 x half> %val) {
+; CHECK-LABEL: @atomicrmw_fmaximum_2_x_half(
+; CHECK-NEXT: [[TMP1:%.*]] = load <2 x half>, ptr [[PTR:%.*]], align 4
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi <2 x half> [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call <2 x half> @llvm.maximum.v2f16(<2 x half> [[LOADED]], <2 x half> [[VAL:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast <2 x half> [[TMP2]] to i32
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast <2 x half> [[LOADED]] to i32
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i32 [[TMP4]], i32 [[TMP3]] seq_cst seq_cst, align 4
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i32, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i32, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i32 [[NEWLOADED]] to <2 x half>
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret <2 x half> [[TMP6]]
+;
+ %res = atomicrmw fmaximum ptr %ptr, <2 x half> %val seq_cst
+ ret <2 x half> %res
+}
+
+define bfloat @atomicrmw_fminimum_bfloat(ptr %ptr, bfloat %val) {
+; CHECK-LABEL: @atomicrmw_fminimum_bfloat(
+; CHECK-NEXT: [[TMP1:%.*]] = load bfloat, ptr [[PTR:%.*]], align 2
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi bfloat [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call bfloat @llvm.minimum.bf16(bfloat [[LOADED]], bfloat [[VAL:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast bfloat [[TMP2]] to i16
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast bfloat [[LOADED]] to i16
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i16 [[TMP4]], i16 [[TMP3]] seq_cst seq_cst, align 2
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i16, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i16, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i16 [[NEWLOADED]] to bfloat
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret bfloat [[TMP6]]
+;
+ %res = atomicrmw fminimum ptr %ptr, bfloat %val seq_cst
+ ret bfloat %res
+}
+
+define half @atomicrmw_fminimum_half(ptr %ptr, half %val) {
+; CHECK-LABEL: @atomicrmw_fminimum_half(
+; CHECK-NEXT: [[TMP1:%.*]] = load half, ptr [[PTR:%.*]], align 2
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi half [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call half @llvm.minimum.f16(half [[LOADED]], half [[VAL:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast half [[TMP2]] to i16
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast half [[LOADED]] to i16
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i16 [[TMP4]], i16 [[TMP3]] seq_cst seq_cst, align 2
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i16, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i16, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i16 [[NEWLOADED]] to half
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret half [[TMP6]]
+;
+ %res = atomicrmw fminimum ptr %ptr, half %val seq_cst
+ ret half %res
+}
+
+define <2 x half> @atomicrmw_fminimum_2_x_half(ptr %ptr, <2 x half> %val) {
+; CHECK-LABEL: @atomicrmw_fminimum_2_x_half(
+; CHECK-NEXT: [[TMP1:%.*]] = load <2 x half>, ptr [[PTR:%.*]], align 4
+; CHECK-NEXT: br label [[ATOMICRMW_START:%.*]]
+; CHECK: atomicrmw.start:
+; CHECK-NEXT: [[LOADED:%.*]] = phi <2 x half> [ [[TMP1]], [[TMP0:%.*]] ], [ [[TMP6:%.*]], [[ATOMICRMW_START]] ]
+; CHECK-NEXT: [[TMP2:%.*]] = call <2 x half> @llvm.minimum.v2f16(<2 x half> [[LOADED]], <2 x half> [[VAL:%.*]])
+; CHECK-NEXT: [[TMP3:%.*]] = bitcast <2 x half> [[TMP2]] to i32
+; CHECK-NEXT: [[TMP4:%.*]] = bitcast <2 x half> [[LOADED]] to i32
+; CHECK-NEXT: [[TMP5:%.*]] = cmpxchg ptr [[PTR]], i32 [[TMP4]], i32 [[TMP3]] seq_cst seq_cst, align 4
+; CHECK-NEXT: [[SUCCESS:%.*]] = extractvalue { i32, i1 } [[TMP5]], 1
+; CHECK-NEXT: [[NEWLOADED:%.*]] = extractvalue { i32, i1 } [[TMP5]], 0
+; CHECK-NEXT: [[TMP6]] = bitcast i32 [[NEWLOADED]] to <2 x half>
+; CHECK-NEXT: br i1 [[SUCCESS]], label [[ATOMICRMW_END:%.*]], label [[ATOMICRMW_START]]
+; CHECK: atomicrmw.end:
+; CHECK-NEXT: ret <2 x half> [[TMP6]]
+;
+ %res = atomicrmw fminimum ptr %ptr, <2 x half> %val seq_cst
----------------
CarolineConcatto wrote:
I am wondering why do we have a test only for minimum with a fixed vector. Any special reason?
https://github.com/llvm/llvm-project/pull/137701
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