[llvm-commits] [llvm] r91813 - /llvm/trunk/test/Transforms/InstCombine/select.ll
Nick Lewycky
nicholas at mxc.ca
Sun Dec 20 21:56:00 PST 2009
Chris Lattner wrote:
> Author: lattner
> Date: Sun Dec 20 23:53:13 2009
> New Revision: 91813
>
> URL: http://llvm.org/viewvc/llvm-project?rev=91813&view=rev
> Log:
> filecheckize
>
> Modified:
> llvm/trunk/test/Transforms/InstCombine/select.ll
>
> Modified: llvm/trunk/test/Transforms/InstCombine/select.ll
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/select.ll?rev=91813&r1=91812&r2=91813&view=diff
>
> ==============================================================================
> --- llvm/trunk/test/Transforms/InstCombine/select.ll (original)
> +++ llvm/trunk/test/Transforms/InstCombine/select.ll Sun Dec 20 23:53:13 2009
> @@ -4,202 +4,306 @@
> ; RUN: opt < %s -instcombine -S | not grep select
>
>
Chris, I think you forgot the important part ;-)
Nick
> define i32 @test1(i32 %A, i32 %B) {
> - %C = select i1 false, i32 %A, i32 %B ; <i32> [#uses=1]
> + %C = select i1 false, i32 %A, i32 %B
> ret i32 %C
> +; CHECK: @test1
> +; CHECK: ret i32 %B
> }
>
> define i32 @test2(i32 %A, i32 %B) {
> - %C = select i1 true, i32 %A, i32 %B ; <i32> [#uses=1]
> + %C = select i1 true, i32 %A, i32 %B
> ret i32 %C
> +; CHECK: @test2
> +; CHECK: ret i32 %A
> }
>
>
> define i32 @test3(i1 %C, i32 %I) {
> ; V = I
> - %V = select i1 %C, i32 %I, i32 %I ; <i32> [#uses=1]
> + %V = select i1 %C, i32 %I, i32 %I
> ret i32 %V
> +; CHECK: @test3
> +; CHECK: ret i32 %I
> }
>
> define i1 @test4(i1 %C) {
> ; V = C
> - %V = select i1 %C, i1 true, i1 false ; <i1> [#uses=1]
> + %V = select i1 %C, i1 true, i1 false
> ret i1 %V
> +; CHECK: @test4
> +; CHECK: ret i1 %C
> }
>
> define i1 @test5(i1 %C) {
> ; V = !C
> - %V = select i1 %C, i1 false, i1 true ; <i1> [#uses=1]
> + %V = select i1 %C, i1 false, i1 true
> ret i1 %V
> +; CHECK: @test5
> +; CHECK: xor i1 %C, true
> +; CHECK: ret i1
> }
>
> define i32 @test6(i1 %C) {
> ; V = cast C to int
> - %V = select i1 %C, i32 1, i32 0 ; <i32> [#uses=1]
> + %V = select i1 %C, i32 1, i32 0
> ret i32 %V
> +; CHECK: @test6
> +; CHECK: %V = zext i1 %C to i32
> +; CHECK: ret i32 %V
> }
>
> define i1 @test7(i1 %C, i1 %X) {
> ; R = or C, X
> - %R = select i1 %C, i1 true, i1 %X ; <i1> [#uses=1]
> + %R = select i1 %C, i1 true, i1 %X
> ret i1 %R
> +; CHECK: @test7
> +; CHECK: %R = or i1 %C, %X
> +; CHECK: ret i1 %R
> }
>
> define i1 @test8(i1 %C, i1 %X) {
> ; R = and C, X
> - %R = select i1 %C, i1 %X, i1 false ; <i1> [#uses=1]
> + %R = select i1 %C, i1 %X, i1 false
> ret i1 %R
> +; CHECK: @test8
> +; CHECK: %R = and i1 %C, %X
> +; CHECK: ret i1 %R
> }
>
> define i1 @test9(i1 %C, i1 %X) {
> ; R = and !C, X
> - %R = select i1 %C, i1 false, i1 %X ; <i1> [#uses=1]
> + %R = select i1 %C, i1 false, i1 %X
> ret i1 %R
> +; CHECK: @test9
> +; CHECK: xor i1 %C, true
> +; CHECK: %R = and i1
> +; CHECK: ret i1 %R
> }
>
> define i1 @test10(i1 %C, i1 %X) {
> ; R = or !C, X
> - %R = select i1 %C, i1 %X, i1 true ; <i1> [#uses=1]
> + %R = select i1 %C, i1 %X, i1 true
> ret i1 %R
> +; CHECK: @test10
> +; CHECK: xor i1 %C, true
> +; CHECK: %R = or i1
> +; CHECK: ret i1 %R
> }
>
> define i32 @test11(i32 %a) {
> - %C = icmp eq i32 %a, 0 ; <i1> [#uses=1]
> - %R = select i1 %C, i32 0, i32 1 ; <i32> [#uses=1]
> + %C = icmp eq i32 %a, 0
> + %R = select i1 %C, i32 0, i32 1
> ret i32 %R
> +; CHECK: @test11
> +; CHECK: icmp ne i32 %a, 0
> +; CHECK: %R = zext i1
> +; CHECK: ret i1 %R
> }
>
> define i32 @test12(i1 %cond, i32 %a) {
> - %b = or i32 %a, 1 ; <i32> [#uses=1]
> - %c = select i1 %cond, i32 %b, i32 %a ; <i32> [#uses=1]
> + %b = or i32 %a, 1
> + %c = select i1 %cond, i32 %b, i32 %a
> ret i32 %c
> +; CHECK: @test12
> +; CHECK: %b = zext i1 %cond to i32
> +; CHECK: %c = or i32 %b, %a
> +; CHECK: ret i32 %c
> }
>
> define i32 @test12a(i1 %cond, i32 %a) {
> - %b = ashr i32 %a, 1 ; <i32> [#uses=1]
> - %c = select i1 %cond, i32 %b, i32 %a ; <i32> [#uses=1]
> + %b = ashr i32 %a, 1
> + %c = select i1 %cond, i32 %b, i32 %a
> ret i32 %c
> +; CHECK: @test12a
> +; CHECK: %b = zext i1 %cond to i32
> +; CHECK: %c = ashr i32 %a, %b
> +; CHECK: ret i32 %c
> }
>
> define i32 @test12b(i1 %cond, i32 %a) {
> - %b = ashr i32 %a, 1 ; <i32> [#uses=1]
> - %c = select i1 %cond, i32 %a, i32 %b ; <i32> [#uses=1]
> + %b = ashr i32 %a, 1
> + %c = select i1 %cond, i32 %a, i32 %b
> ret i32 %c
> +; CHECK: @test12b
> +; CHECK: zext i1 %cond to i32
> +; CHECK: %b = xor i32
> +; CHECK: %c = ashr i32 %a, %b
> +; CHECK: ret i32 %c
> }
>
> define i32 @test13(i32 %a, i32 %b) {
> - %C = icmp eq i32 %a, %b ; <i1> [#uses=1]
> - %V = select i1 %C, i32 %a, i32 %b ; <i32> [#uses=1]
> + %C = icmp eq i32 %a, %b
> + %V = select i1 %C, i32 %a, i32 %b
> ret i32 %V
> +; CHECK: @test13
> +; CHECK: ret i32 %b
> }
>
> define i32 @test13a(i32 %a, i32 %b) {
> - %C = icmp ne i32 %a, %b ; <i1> [#uses=1]
> - %V = select i1 %C, i32 %a, i32 %b ; <i32> [#uses=1]
> + %C = icmp ne i32 %a, %b
> + %V = select i1 %C, i32 %a, i32 %b
> ret i32 %V
> +; CHECK: @test13a
> +; CHECK: ret i32 %a
> }
>
> define i32 @test13b(i32 %a, i32 %b) {
> - %C = icmp eq i32 %a, %b ; <i1> [#uses=1]
> - %V = select i1 %C, i32 %b, i32 %a ; <i32> [#uses=1]
> + %C = icmp eq i32 %a, %b
> + %V = select i1 %C, i32 %b, i32 %a
> ret i32 %V
> +; CHECK: @test13b
> +; CHECK: ret i32 %a
> }
>
> define i1 @test14a(i1 %C, i32 %X) {
> - %V = select i1 %C, i32 %X, i32 0 ; <i32> [#uses=1]
> + %V = select i1 %C, i32 %X, i32 0
> ; (X < 1) | !C
> - %R = icmp slt i32 %V, 1 ; <i1> [#uses=1]
> + %R = icmp slt i32 %V, 1
> ret i1 %R
> +; CHECK: @test14a
> +; CHECK: icmp slt i32 %X, 1
> +; CHECK: xor i1 %C, true
> +; CHECK: or i1
> +; CHECK: ret i1 %R
> }
>
> define i1 @test14b(i1 %C, i32 %X) {
> - %V = select i1 %C, i32 0, i32 %X ; <i32> [#uses=1]
> + %V = select i1 %C, i32 0, i32 %X
> ; (X < 1) | C
> - %R = icmp slt i32 %V, 1 ; <i1> [#uses=1]
> + %R = icmp slt i32 %V, 1
> ret i1 %R
> +; CHECK: @test14b
> +; CHECK: icmp slt i32 %X, 1
> +; CHECK: or i1
> +; CHECK: ret i1 %R
> }
>
> ;; Code sequence for (X & 16) ? 16 : 0
> define i32 @test15a(i32 %X) {
> - %t1 = and i32 %X, 16 ; <i32> [#uses=1]
> - %t2 = icmp eq i32 %t1, 0 ; <i1> [#uses=1]
> - %t3 = select i1 %t2, i32 0, i32 16 ; <i32> [#uses=1]
> + %t1 = and i32 %X, 16
> + %t2 = icmp eq i32 %t1, 0
> + %t3 = select i1 %t2, i32 0, i32 16
> ret i32 %t3
> +; CHECK: @test15a
> +; CHECK: %t1 = and i32 %X, 16
> +; CHECK: ret i32 %t1
> }
>
> ;; Code sequence for (X & 32) ? 0 : 24
> define i32 @test15b(i32 %X) {
> - %t1 = and i32 %X, 32 ; <i32> [#uses=1]
> - %t2 = icmp eq i32 %t1, 0 ; <i1> [#uses=1]
> - %t3 = select i1 %t2, i32 32, i32 0 ; <i32> [#uses=1]
> + %t1 = and i32 %X, 32
> + %t2 = icmp eq i32 %t1, 0
> + %t3 = select i1 %t2, i32 32, i32 0
> ret i32 %t3
> +; CHECK: @test15b
> +; CHECK: %t1 = and i32 %X, 32
> +; CHECK: xor i32 %t1, 32
> +; CHECK: ret i32
> }
>
> ;; Alternate code sequence for (X & 16) ? 16 : 0
> define i32 @test15c(i32 %X) {
> - %t1 = and i32 %X, 16 ; <i32> [#uses=1]
> - %t2 = icmp eq i32 %t1, 16 ; <i1> [#uses=1]
> - %t3 = select i1 %t2, i32 16, i32 0 ; <i32> [#uses=1]
> + %t1 = and i32 %X, 16
> + %t2 = icmp eq i32 %t1, 16
> + %t3 = select i1 %t2, i32 16, i32 0
> ret i32 %t3
> +; CHECK: @test15c
> +; CHECK: %t1 = and i32 %X, 16
> +; CHECK: ret i32 %t1
> }
>
> ;; Alternate code sequence for (X & 16) ? 16 : 0
> define i32 @test15d(i32 %X) {
> - %t1 = and i32 %X, 16 ; <i32> [#uses=1]
> - %t2 = icmp ne i32 %t1, 0 ; <i1> [#uses=1]
> - %t3 = select i1 %t2, i32 16, i32 0 ; <i32> [#uses=1]
> + %t1 = and i32 %X, 16
> + %t2 = icmp ne i32 %t1, 0
> + %t3 = select i1 %t2, i32 16, i32 0
> ret i32 %t3
> +; CHECK: @test15d
> +; CHECK: %t1 = and i32 %X, 16
> +; CHECK: ret i32 %t1
> }
>
> define i32 @test16(i1 %C, i32* %P) {
> - %P2 = select i1 %C, i32* %P, i32* null ; <i32*> [#uses=1]
> - %V = load i32* %P2 ; <i32> [#uses=1]
> + %P2 = select i1 %C, i32* %P, i32* null
> + %V = load i32* %P2
> ret i32 %V
> +; CHECK: @test16
> +; CHECK-NEXT: %V = load i32* %P
> +; CHECK: ret i32 %V
> }
>
> define i1 @test17(i32* %X, i1 %C) {
> - %R = select i1 %C, i32* %X, i32* null ; <i32*> [#uses=1]
> - %RV = icmp eq i32* %R, null ; <i1> [#uses=1]
> + %R = select i1 %C, i32* %X, i32* null
> + %RV = icmp eq i32* %R, null
> ret i1 %RV
> +; CHECK: @test17
> +; CHECK: icmp eq i32* %X, null
> +; CHECK: xor i1 %C, true
> +; CHECK: %RV = or i1
> +; CHECK: ret i1 %RV
> }
>
> define i32 @test18(i32 %X, i32 %Y, i1 %C) {
> - %R = select i1 %C, i32 %X, i32 0 ; <i32> [#uses=1]
> - %V = sdiv i32 %Y, %R ; <i32> [#uses=1]
> + %R = select i1 %C, i32 %X, i32 0
> + %V = sdiv i32 %Y, %R
> ret i32 %V
> +; CHECK: @test18
> +; CHECK: %V = sdiv i32 %Y, %X
> +; CHECK: ret i32 %V
> }
>
> define i32 @test19(i32 %x) {
> - %tmp = icmp ugt i32 %x, 2147483647 ; <i1> [#uses=1]
> - %retval = select i1 %tmp, i32 -1, i32 0 ; <i32> [#uses=1]
> + %tmp = icmp ugt i32 %x, 2147483647
> + %retval = select i1 %tmp, i32 -1, i32 0
> ret i32 %retval
> +; CHECK: @test19
> +; CHECK-NEXT: ashr i32 %x, 31
> +; CHECK-NEXT: ret i32
> }
>
> define i32 @test20(i32 %x) {
> - %tmp = icmp slt i32 %x, 0 ; <i1> [#uses=1]
> - %retval = select i1 %tmp, i32 -1, i32 0 ; <i32> [#uses=1]
> + %tmp = icmp slt i32 %x, 0
> + %retval = select i1 %tmp, i32 -1, i32 0
> ret i32 %retval
> +; CHECK: @test20
> +; CHECK-NEXT: ashr i32 %x, 31
> +; CHECK-NEXT: ret i32
> }
>
> define i64 @test21(i32 %x) {
> - %tmp = icmp slt i32 %x, 0 ; <i1> [#uses=1]
> - %retval = select i1 %tmp, i64 -1, i64 0 ; <i64> [#uses=1]
> + %tmp = icmp slt i32 %x, 0
> + %retval = select i1 %tmp, i64 -1, i64 0
> ret i64 %retval
> +; CHECK: @test21
> +; CHECK-NEXT: ashr i32 %x, 31
> +; CHECK-NEXT: sext i32
> +; CHECK-NEXT: ret i64
> }
>
> define i16 @test22(i32 %x) {
> - %tmp = icmp slt i32 %x, 0 ; <i1> [#uses=1]
> - %retval = select i1 %tmp, i16 -1, i16 0 ; <i16> [#uses=1]
> + %tmp = icmp slt i32 %x, 0
> + %retval = select i1 %tmp, i16 -1, i16 0
> ret i16 %retval
> +; CHECK: @test21
> +; CHECK-NEXT: ashr i32 %x, 31
> +; CHECK-NEXT: trunc i32
> +; CHECK-NEXT: ret i16
> }
>
> define i1 @test23(i1 %a, i1 %b) {
> - %c = select i1 %a, i1 %b, i1 %a ; <i1> [#uses=1]
> + %c = select i1 %a, i1 %b, i1 %a
> ret i1 %c
> +; CHECK: @test23
> +; CHECK-NEXT: %c = and i1 %a, %b
> +; CHECK-NEXT: ret i1 %c
> }
>
> define i1 @test24(i1 %a, i1 %b) {
> - %c = select i1 %a, i1 %a, i1 %b ; <i1> [#uses=1]
> + %c = select i1 %a, i1 %a, i1 %b
> ret i1 %c
> +; CHECK: @test24
> +; CHECK-NEXT: %c = or i1 %a, %b
> +; CHECK-NEXT: ret i1 %c
> }
>
> define i32 @test25(i1 %c) {
> @@ -211,6 +315,9 @@
> %a = phi i1 [true, %jump], [false, %entry]
> %b = select i1 %a, i32 10, i32 20
> ret i32 %b
> +; CHECK: @test25
> +; CHECK: %a = phi i32 [ 10, %jump ], [ 20, %entry ]
> +; CHECK-NEXT: ret i32 %a
> }
>
> define i32 @test26(i1 %cond) {
> @@ -223,6 +330,9 @@
> %a = phi i1 [true, %jump], [%c, %entry]
> %b = select i1 %a, i32 10, i32 20
> ret i32 %b
> +; CHECK: @test26
> +; CHECK: %a = phi i32 [ 10, %jump ], [ 20, %entry ]
> +; CHECK-NEXT: ret i32 %a
> }
>
> define i32 @test27(i1 %c, i32 %A, i32 %B) {
> @@ -234,6 +344,9 @@
> %a = phi i1 [true, %jump], [false, %entry]
> %b = select i1 %a, i32 %A, i32 %B
> ret i32 %b
> +; CHECK: @test27
> +; CHECK: %a = phi i32 [ %A, %jump ], [ %B, %entry ]
> +; CHECK-NEXT: ret i32 %a
> }
>
> define i32 @test28(i1 %cond, i32 %A, i32 %B) {
> @@ -246,6 +359,9 @@
> %a = phi i1 [true, %jump], [false, %entry]
> %b = select i1 %a, i32 %A, i32 %c
> ret i32 %b
> +; CHECK: @test28
> +; CHECK: %a = phi i32 [ %A, %jump ], [ %B, %entry ]
> +; CHECK-NEXT: ret i32 %a
> }
>
> define i32 @test29(i1 %cond, i32 %A, i32 %B) {
> @@ -261,5 +377,8 @@
> next:
> %b = select i1 %a, i32 %A, i32 %c
> ret i32 %b
> +; CHECK: @test25
> +; CHECK: %a = phi i32 [ %A, %jump ], [ %B, %entry ]
> +; CHECK-NEXT: ret i32 %a
> }
>
>
>
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