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llvm-6502/test/Transforms/InstCombine/cast.ll
Chandler Carruth 333d5c9f51 [InstCombine] Change LLVM To canonicalize toward the value type being 
stored rather than the pointer type.

This change is analogous to r220138 which changed the canonicalization
for loads. The rationale is the same: memory does not have a type,
operations (and thus the values they produce) have a type. We should
match that type as closely as possible rather than reading some form of
semantics into the pointer type.

With this change, loads and stores should no longer be made with
nonsensical types for the values that tehy load and store. This is
particularly important when trying to match specific loaded and stored
types in the process of doing other instcombines, which is what led me
down this twisty maze of miscanonicalization.

I've put quite some effort into looking through IR to find places where
LLVM's optimizer was being unreasonably conservative in the face of
mismatched load and store types, however it is possible (let's say,
likely!) I have missed some. If you see regressions here, or from
r220138, the likely cause is some part of LLVM failing to cope with load
and store types differing. Test cases appreciated, it is important that
we root all of these out of LLVM.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222748 91177308-0d34-0410-b5e6-96231b3b80d8
2014-11-25 10:09:51 +00:00

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; Tests to make sure elimination of casts is working correctly
; RUN: opt < %s -instcombine -S | FileCheck %s
target datalayout = "E-p:64:64:64-p1:32:32:32-p2:64:64:64-p3:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128-n8:16:32:64"
@inbuf = external global [32832 x i8] ; <[32832 x i8]*> [#uses=1]
define i32 @test1(i32 %A) {
%c1 = bitcast i32 %A to i32 ; <i32> [#uses=1]
%c2 = bitcast i32 %c1 to i32 ; <i32> [#uses=1]
ret i32 %c2
; CHECK: ret i32 %A
}
define i64 @test2(i8 %A) {
%c1 = zext i8 %A to i16 ; <i16> [#uses=1]
%c2 = zext i16 %c1 to i32 ; <i32> [#uses=1]
%Ret = zext i32 %c2 to i64 ; <i64> [#uses=1]
ret i64 %Ret
; CHECK: %Ret = zext i8 %A to i64
; CHECK: ret i64 %Ret
}
; This function should just use bitwise AND
define i64 @test3(i64 %A) {
%c1 = trunc i64 %A to i8 ; <i8> [#uses=1]
%c2 = zext i8 %c1 to i64 ; <i64> [#uses=1]
ret i64 %c2
; CHECK: %c2 = and i64 %A, 255
; CHECK: ret i64 %c2
}
define i32 @test4(i32 %A, i32 %B) {
%COND = icmp slt i32 %A, %B ; <i1> [#uses=1]
; Booleans are unsigned integrals
%c = zext i1 %COND to i8 ; <i8> [#uses=1]
; for the cast elim purpose
%result = zext i8 %c to i32 ; <i32> [#uses=1]
ret i32 %result
; CHECK: %COND = icmp slt i32 %A, %B
; CHECK: %result = zext i1 %COND to i32
; CHECK: ret i32 %result
}
define i32 @test5(i1 %B) {
; This cast should get folded into
%c = zext i1 %B to i8 ; <i8> [#uses=1]
; this cast
%result = zext i8 %c to i32 ; <i32> [#uses=1]
ret i32 %result
; CHECK: %result = zext i1 %B to i32
; CHECK: ret i32 %result
}
define i32 @test6(i64 %A) {
%c1 = trunc i64 %A to i32 ; <i32> [#uses=1]
%res = bitcast i32 %c1 to i32 ; <i32> [#uses=1]
ret i32 %res
; CHECK: trunc i64 %A to i32
; CHECK-NEXT: ret i32
}
define i64 @test7(i1 %A) {
%c1 = zext i1 %A to i32 ; <i32> [#uses=1]
%res = sext i32 %c1 to i64 ; <i64> [#uses=1]
ret i64 %res
; CHECK: %res = zext i1 %A to i64
; CHECK: ret i64 %res
}
define i64 @test8(i8 %A) {
%c1 = sext i8 %A to i64 ; <i64> [#uses=1]
%res = bitcast i64 %c1 to i64 ; <i64> [#uses=1]
ret i64 %res
; CHECK: = sext i8 %A to i64
; CHECK-NEXT: ret i64
}
define i16 @test9(i16 %A) {
%c1 = sext i16 %A to i32 ; <i32> [#uses=1]
%c2 = trunc i32 %c1 to i16 ; <i16> [#uses=1]
ret i16 %c2
; CHECK: ret i16 %A
}
define i16 @test10(i16 %A) {
%c1 = sext i16 %A to i32 ; <i32> [#uses=1]
%c2 = trunc i32 %c1 to i16 ; <i16> [#uses=1]
ret i16 %c2
; CHECK: ret i16 %A
}
declare void @varargs(i32, ...)
define void @test11(i32* %P) {
%c = bitcast i32* %P to i16* ; <i16*> [#uses=1]
call void (i32, ...)* @varargs( i32 5, i16* %c )
ret void
; CHECK: call void (i32, ...)* @varargs(i32 5, i32* %P)
; CHECK: ret void
}
define i8* @test13(i64 %A) {
%c = getelementptr [0 x i8]* bitcast ([32832 x i8]* @inbuf to [0 x i8]*), i64 0, i64 %A ; <i8*> [#uses=1]
ret i8* %c
; CHECK: %c = getelementptr [32832 x i8]* @inbuf, i64 0, i64 %A
; CHECK: ret i8* %c
}
define i1 @test14(i8 %A) {
%c = bitcast i8 %A to i8 ; <i8> [#uses=1]
%X = icmp ult i8 %c, -128 ; <i1> [#uses=1]
ret i1 %X
; CHECK: %X = icmp sgt i8 %A, -1
; CHECK: ret i1 %X
}
; This just won't occur when there's no difference between ubyte and sbyte
;bool %test15(ubyte %A) {
; %c = cast ubyte %A to sbyte
; %X = setlt sbyte %c, 0 ; setgt %A, 127
; ret bool %X
;}
define i1 @test16(i32* %P) {
%c = icmp ne i32* %P, null ; <i1> [#uses=1]
ret i1 %c
; CHECK: %c = icmp ne i32* %P, null
; CHECK: ret i1 %c
}
define i16 @test17(i1 %tmp3) {
%c = zext i1 %tmp3 to i32 ; <i32> [#uses=1]
%t86 = trunc i32 %c to i16 ; <i16> [#uses=1]
ret i16 %t86
; CHECK: %t86 = zext i1 %tmp3 to i16
; CHECK: ret i16 %t86
}
define i16 @test18(i8 %tmp3) {
%c = sext i8 %tmp3 to i32 ; <i32> [#uses=1]
%t86 = trunc i32 %c to i16 ; <i16> [#uses=1]
ret i16 %t86
; CHECK: %t86 = sext i8 %tmp3 to i16
; CHECK: ret i16 %t86
}
define i1 @test19(i32 %X) {
%c = sext i32 %X to i64 ; <i64> [#uses=1]
%Z = icmp slt i64 %c, 12345 ; <i1> [#uses=1]
ret i1 %Z
; CHECK: %Z = icmp slt i32 %X, 12345
; CHECK: ret i1 %Z
}
define i1 @test20(i1 %B) {
%c = zext i1 %B to i32 ; <i32> [#uses=1]
%D = icmp slt i32 %c, -1 ; <i1> [#uses=1]
;; false
ret i1 %D
; CHECK: ret i1 false
}
define i32 @test21(i32 %X) {
%c1 = trunc i32 %X to i8 ; <i8> [#uses=1]
;; sext -> zext -> and -> nop
%c2 = sext i8 %c1 to i32 ; <i32> [#uses=1]
%RV = and i32 %c2, 255 ; <i32> [#uses=1]
ret i32 %RV
; CHECK: %c21 = and i32 %X, 255
; CHECK: ret i32 %c21
}
define i32 @test22(i32 %X) {
%c1 = trunc i32 %X to i8 ; <i8> [#uses=1]
;; sext -> zext -> and -> nop
%c2 = sext i8 %c1 to i32 ; <i32> [#uses=1]
%RV = shl i32 %c2, 24 ; <i32> [#uses=1]
ret i32 %RV
; CHECK: shl i32 %X, 24
; CHECK-NEXT: ret i32
}
define i32 @test23(i32 %X) {
;; Turn into an AND even though X
%c1 = trunc i32 %X to i16 ; <i16> [#uses=1]
;; and Z are signed.
%c2 = zext i16 %c1 to i32 ; <i32> [#uses=1]
ret i32 %c2
; CHECK: %c2 = and i32 %X, 65535
; CHECK: ret i32 %c2
}
define i1 @test24(i1 %C) {
%X = select i1 %C, i32 14, i32 1234 ; <i32> [#uses=1]
;; Fold cast into select
%c = icmp ne i32 %X, 0 ; <i1> [#uses=1]
ret i1 %c
; CHECK: ret i1 true
}
define i32 @test26(float %F) {
;; no need to cast from float->double.
%c = fpext float %F to double ; <double> [#uses=1]
%D = fptosi double %c to i32 ; <i32> [#uses=1]
ret i32 %D
; CHECK: %D = fptosi float %F to i32
; CHECK: ret i32 %D
}
define [4 x float]* @test27([9 x [4 x float]]* %A) {
%c = bitcast [9 x [4 x float]]* %A to [4 x float]* ; <[4 x float]*> [#uses=1]
ret [4 x float]* %c
; CHECK: %c = getelementptr inbounds [9 x [4 x float]]* %A, i64 0, i64 0
; CHECK: ret [4 x float]* %c
}
define float* @test28([4 x float]* %A) {
%c = bitcast [4 x float]* %A to float* ; <float*> [#uses=1]
ret float* %c
; CHECK: %c = getelementptr inbounds [4 x float]* %A, i64 0, i64 0
; CHECK: ret float* %c
}
define i32 @test29(i32 %c1, i32 %c2) {
%tmp1 = trunc i32 %c1 to i8 ; <i8> [#uses=1]
%tmp4.mask = trunc i32 %c2 to i8 ; <i8> [#uses=1]
%tmp = or i8 %tmp4.mask, %tmp1 ; <i8> [#uses=1]
%tmp10 = zext i8 %tmp to i32 ; <i32> [#uses=1]
ret i32 %tmp10
; CHECK: %tmp2 = or i32 %c2, %c1
; CHECK: %tmp10 = and i32 %tmp2, 255
; CHECK: ret i32 %tmp10
}
define i32 @test30(i32 %c1) {
%c2 = trunc i32 %c1 to i8 ; <i8> [#uses=1]
%c3 = xor i8 %c2, 1 ; <i8> [#uses=1]
%c4 = zext i8 %c3 to i32 ; <i32> [#uses=1]
ret i32 %c4
; CHECK: %c3 = and i32 %c1, 255
; CHECK: %c4 = xor i32 %c3, 1
; CHECK: ret i32 %c4
}
define i1 @test31(i64 %A) {
%B = trunc i64 %A to i32 ; <i32> [#uses=1]
%C = and i32 %B, 42 ; <i32> [#uses=1]
%D = icmp eq i32 %C, 10 ; <i1> [#uses=1]
ret i1 %D
; CHECK: %C = and i64 %A, 42
; CHECK: %D = icmp eq i64 %C, 10
; CHECK: ret i1 %D
}
define i32 @test33(i32 %c1) {
%x = bitcast i32 %c1 to float ; <float> [#uses=1]
%y = bitcast float %x to i32 ; <i32> [#uses=1]
ret i32 %y
; CHECK: ret i32 %c1
}
define i16 @test34(i16 %a) {
%c1 = zext i16 %a to i32 ; <i32> [#uses=1]
%tmp21 = lshr i32 %c1, 8 ; <i32> [#uses=1]
%c2 = trunc i32 %tmp21 to i16 ; <i16> [#uses=1]
ret i16 %c2
; CHECK: %tmp21 = lshr i16 %a, 8
; CHECK: ret i16 %tmp21
}
define i16 @test35(i16 %a) {
%c1 = bitcast i16 %a to i16 ; <i16> [#uses=1]
%tmp2 = lshr i16 %c1, 8 ; <i16> [#uses=1]
%c2 = bitcast i16 %tmp2 to i16 ; <i16> [#uses=1]
ret i16 %c2
; CHECK: %tmp2 = lshr i16 %a, 8
; CHECK: ret i16 %tmp2
}
; icmp sgt i32 %a, -1
; rdar://6480391
define i1 @test36(i32 %a) {
%b = lshr i32 %a, 31
%c = trunc i32 %b to i8
%d = icmp eq i8 %c, 0
ret i1 %d
; CHECK: %d = icmp sgt i32 %a, -1
; CHECK: ret i1 %d
}
; ret i1 false
define i1 @test37(i32 %a) {
%b = lshr i32 %a, 31
%c = or i32 %b, 512
%d = trunc i32 %c to i8
%e = icmp eq i8 %d, 11
ret i1 %e
; CHECK: ret i1 false
}
define i64 @test38(i32 %a) {
%1 = icmp eq i32 %a, -2
%2 = zext i1 %1 to i8
%3 = xor i8 %2, 1
%4 = zext i8 %3 to i64
ret i64 %4
; CHECK: %1 = icmp ne i32 %a, -2
; CHECK: %2 = zext i1 %1 to i64
; CHECK: ret i64 %2
}
define i16 @test39(i16 %a) {
%tmp = zext i16 %a to i32
%tmp21 = lshr i32 %tmp, 8
%tmp5 = shl i32 %tmp, 8
%tmp.upgrd.32 = or i32 %tmp21, %tmp5
%tmp.upgrd.3 = trunc i32 %tmp.upgrd.32 to i16
ret i16 %tmp.upgrd.3
; CHECK-LABEL: @test39(
; CHECK: %tmp.upgrd.32 = call i16 @llvm.bswap.i16(i16 %a)
; CHECK: ret i16 %tmp.upgrd.32
}
define i16 @test40(i16 %a) {
%tmp = zext i16 %a to i32
%tmp21 = lshr i32 %tmp, 9
%tmp5 = shl i32 %tmp, 8
%tmp.upgrd.32 = or i32 %tmp21, %tmp5
%tmp.upgrd.3 = trunc i32 %tmp.upgrd.32 to i16
ret i16 %tmp.upgrd.3
; CHECK-LABEL: @test40(
; CHECK: %tmp21 = lshr i16 %a, 9
; CHECK: %tmp5 = shl i16 %a, 8
; CHECK: %tmp.upgrd.32 = or i16 %tmp21, %tmp5
; CHECK: ret i16 %tmp.upgrd.32
}
; PR1263
define i32* @test41(i32* %tmp1) {
%tmp64 = bitcast i32* %tmp1 to { i32 }*
%tmp65 = getelementptr { i32 }* %tmp64, i32 0, i32 0
ret i32* %tmp65
; CHECK-LABEL: @test41(
; CHECK: ret i32* %tmp1
}
define i32 addrspace(1)* @test41_addrspacecast_smaller(i32* %tmp1) {
%tmp64 = addrspacecast i32* %tmp1 to { i32 } addrspace(1)*
%tmp65 = getelementptr { i32 } addrspace(1)* %tmp64, i32 0, i32 0
ret i32 addrspace(1)* %tmp65
; CHECK-LABEL: @test41_addrspacecast_smaller(
; CHECK: addrspacecast i32* %tmp1 to i32 addrspace(1)*
; CHECK-NEXT: ret i32 addrspace(1)*
}
define i32* @test41_addrspacecast_larger(i32 addrspace(1)* %tmp1) {
%tmp64 = addrspacecast i32 addrspace(1)* %tmp1 to { i32 }*
%tmp65 = getelementptr { i32 }* %tmp64, i32 0, i32 0
ret i32* %tmp65
; CHECK-LABEL: @test41_addrspacecast_larger(
; CHECK: addrspacecast i32 addrspace(1)* %tmp1 to i32*
; CHECK-NEXT: ret i32*
}
define i32 @test42(i32 %X) {
%Y = trunc i32 %X to i8 ; <i8> [#uses=1]
%Z = zext i8 %Y to i32 ; <i32> [#uses=1]
ret i32 %Z
; CHECK-LABEL: @test42(
; CHECK: %Z = and i32 %X, 255
}
; rdar://6598839
define zeroext i64 @test43(i8 zeroext %on_off) nounwind readonly {
%A = zext i8 %on_off to i32
%B = add i32 %A, -1
%C = sext i32 %B to i64
ret i64 %C ;; Should be (add (zext i8 -> i64), -1)
; CHECK-LABEL: @test43(
; CHECK-NEXT: %A = zext i8 %on_off to i64
; CHECK-NEXT: %B = add nsw i64 %A, -1
; CHECK-NEXT: ret i64 %B
}
define i64 @test44(i8 %T) {
%A = zext i8 %T to i16
%B = or i16 %A, 1234
%C = zext i16 %B to i64
ret i64 %C
; CHECK-LABEL: @test44(
; CHECK-NEXT: %A = zext i8 %T to i64
; CHECK-NEXT: %B = or i64 %A, 1234
; CHECK-NEXT: ret i64 %B
}
define i64 @test45(i8 %A, i64 %Q) {
%D = trunc i64 %Q to i32 ;; should be removed
%B = sext i8 %A to i32
%C = or i32 %B, %D
%E = zext i32 %C to i64
ret i64 %E
; CHECK-LABEL: @test45(
; CHECK-NEXT: %B = sext i8 %A to i64
; CHECK-NEXT: %C = or i64 %B, %Q
; CHECK-NEXT: %E = and i64 %C, 4294967295
; CHECK-NEXT: ret i64 %E
}
define i64 @test46(i64 %A) {
%B = trunc i64 %A to i32
%C = and i32 %B, 42
%D = shl i32 %C, 8
%E = zext i32 %D to i64
ret i64 %E
; CHECK-LABEL: @test46(
; CHECK-NEXT: %C = shl i64 %A, 8
; CHECK-NEXT: %D = and i64 %C, 10752
; CHECK-NEXT: ret i64 %D
}
define i64 @test47(i8 %A) {
%B = sext i8 %A to i32
%C = or i32 %B, 42
%E = zext i32 %C to i64
ret i64 %E
; CHECK-LABEL: @test47(
; CHECK-NEXT: %B = sext i8 %A to i64
; CHECK-NEXT: %C = and i64 %B, 4294967253
; CHECK-NEXT: %E = or i64 %C, 42
; CHECK-NEXT: ret i64 %E
}
define i64 @test48(i8 %A, i8 %a) {
%b = zext i8 %a to i32
%B = zext i8 %A to i32
%C = shl i32 %B, 8
%D = or i32 %C, %b
%E = zext i32 %D to i64
ret i64 %E
; CHECK-LABEL: @test48(
; CHECK-NEXT: %b = zext i8 %a to i64
; CHECK-NEXT: %B = zext i8 %A to i64
; CHECK-NEXT: %C = shl nuw nsw i64 %B, 8
; CHECK-NEXT: %D = or i64 %C, %b
; CHECK-NEXT: ret i64 %D
}
define i64 @test49(i64 %A) {
%B = trunc i64 %A to i32
%C = or i32 %B, 1
%D = sext i32 %C to i64
ret i64 %D
; CHECK-LABEL: @test49(
; CHECK-NEXT: %C = shl i64 %A, 32
; CHECK-NEXT: ashr exact i64 %C, 32
; CHECK-NEXT: %D = or i64 {{.*}}, 1
; CHECK-NEXT: ret i64 %D
}
define i64 @test50(i64 %A) {
%a = lshr i64 %A, 2
%B = trunc i64 %a to i32
%D = add i32 %B, -1
%E = sext i32 %D to i64
ret i64 %E
; CHECK-LABEL: @test50(
; lshr+shl will be handled by DAGCombine.
; CHECK-NEXT: lshr i64 %A, 2
; CHECK-NEXT: shl i64 %a, 32
; CHECK-NEXT: add i64 {{.*}}, -4294967296
; CHECK-NEXT: %E = ashr exact i64 {{.*}}, 32
; CHECK-NEXT: ret i64 %E
}
define i64 @test51(i64 %A, i1 %cond) {
%B = trunc i64 %A to i32
%C = and i32 %B, -2
%D = or i32 %B, 1
%E = select i1 %cond, i32 %C, i32 %D
%F = sext i32 %E to i64
ret i64 %F
; CHECK-LABEL: @test51(
; CHECK-NEXT: %C = and i64 %A, 4294967294
; CHECK-NEXT: %D = or i64 %A, 1
; CHECK-NEXT: %E = select i1 %cond, i64 %C, i64 %D
; CHECK-NEXT: %sext = shl i64 %E, 32
; CHECK-NEXT: %F = ashr exact i64 %sext, 32
; CHECK-NEXT: ret i64 %F
}
define i32 @test52(i64 %A) {
%B = trunc i64 %A to i16
%C = or i16 %B, -32574
%D = and i16 %C, -25350
%E = zext i16 %D to i32
ret i32 %E
; CHECK-LABEL: @test52(
; CHECK-NEXT: %B = trunc i64 %A to i32
; CHECK-NEXT: %C = and i32 %B, 7224
; CHECK-NEXT: %D = or i32 %C, 32962
; CHECK-NEXT: ret i32 %D
}
define i64 @test53(i32 %A) {
%B = trunc i32 %A to i16
%C = or i16 %B, -32574
%D = and i16 %C, -25350
%E = zext i16 %D to i64
ret i64 %E
; CHECK-LABEL: @test53(
; CHECK-NEXT: %B = zext i32 %A to i64
; CHECK-NEXT: %C = and i64 %B, 7224
; CHECK-NEXT: %D = or i64 %C, 32962
; CHECK-NEXT: ret i64 %D
}
define i32 @test54(i64 %A) {
%B = trunc i64 %A to i16
%C = or i16 %B, -32574
%D = and i16 %C, -25350
%E = sext i16 %D to i32
ret i32 %E
; CHECK-LABEL: @test54(
; CHECK-NEXT: %B = trunc i64 %A to i32
; CHECK-NEXT: %C = and i32 %B, 7224
; CHECK-NEXT: %D = or i32 %C, -32574
; CHECK-NEXT: ret i32 %D
}
define i64 @test55(i32 %A) {
%B = trunc i32 %A to i16
%C = or i16 %B, -32574
%D = and i16 %C, -25350
%E = sext i16 %D to i64
ret i64 %E
; CHECK-LABEL: @test55(
; CHECK-NEXT: %B = zext i32 %A to i64
; CHECK-NEXT: %C = and i64 %B, 7224
; CHECK-NEXT: %D = or i64 %C, -32574
; CHECK-NEXT: ret i64 %D
}
define i64 @test56(i16 %A) nounwind {
%tmp353 = sext i16 %A to i32
%tmp354 = lshr i32 %tmp353, 5
%tmp355 = zext i32 %tmp354 to i64
ret i64 %tmp355
; CHECK-LABEL: @test56(
; CHECK-NEXT: %tmp353 = sext i16 %A to i64
; CHECK-NEXT: %tmp354 = lshr i64 %tmp353, 5
; CHECK-NEXT: %tmp355 = and i64 %tmp354, 134217727
; CHECK-NEXT: ret i64 %tmp355
}
define i64 @test57(i64 %A) nounwind {
%B = trunc i64 %A to i32
%C = lshr i32 %B, 8
%E = zext i32 %C to i64
ret i64 %E
; CHECK-LABEL: @test57(
; CHECK-NEXT: %C = lshr i64 %A, 8
; CHECK-NEXT: %E = and i64 %C, 16777215
; CHECK-NEXT: ret i64 %E
}
define i64 @test58(i64 %A) nounwind {
%B = trunc i64 %A to i32
%C = lshr i32 %B, 8
%D = or i32 %C, 128
%E = zext i32 %D to i64
ret i64 %E
; CHECK-LABEL: @test58(
; CHECK-NEXT: %C = lshr i64 %A, 8
; CHECK-NEXT: %D = and i64 %C, 16777087
; CHECK-NEXT: %E = or i64 %D, 128
; CHECK-NEXT: ret i64 %E
}
define i64 @test59(i8 %A, i8 %B) nounwind {
%C = zext i8 %A to i32
%D = shl i32 %C, 4
%E = and i32 %D, 48
%F = zext i8 %B to i32
%G = lshr i32 %F, 4
%H = or i32 %G, %E
%I = zext i32 %H to i64
ret i64 %I
; CHECK-LABEL: @test59(
; CHECK-NEXT: %C = zext i8 %A to i64
; CHECK-NOT: i32
; CHECK: %F = zext i8 %B to i64
; CHECK-NOT: i32
; CHECK: ret i64 %H
}
define <3 x i32> @test60(<4 x i32> %call4) nounwind {
%tmp11 = bitcast <4 x i32> %call4 to i128
%tmp9 = trunc i128 %tmp11 to i96
%tmp10 = bitcast i96 %tmp9 to <3 x i32>
ret <3 x i32> %tmp10
; CHECK-LABEL: @test60(
; CHECK-NEXT: shufflevector
; CHECK-NEXT: ret
}
define <4 x i32> @test61(<3 x i32> %call4) nounwind {
%tmp11 = bitcast <3 x i32> %call4 to i96
%tmp9 = zext i96 %tmp11 to i128
%tmp10 = bitcast i128 %tmp9 to <4 x i32>
ret <4 x i32> %tmp10
; CHECK-LABEL: @test61(
; CHECK-NEXT: shufflevector
; CHECK-NEXT: ret
}
define <4 x i32> @test62(<3 x float> %call4) nounwind {
%tmp11 = bitcast <3 x float> %call4 to i96
%tmp9 = zext i96 %tmp11 to i128
%tmp10 = bitcast i128 %tmp9 to <4 x i32>
ret <4 x i32> %tmp10
; CHECK-LABEL: @test62(
; CHECK-NEXT: bitcast
; CHECK-NEXT: shufflevector
; CHECK-NEXT: ret
}
; PR7311 - Don't create invalid IR on scalar->vector cast.
define <2 x float> @test63(i64 %tmp8) nounwind {
entry:
%a = bitcast i64 %tmp8 to <2 x i32>
%vcvt.i = uitofp <2 x i32> %a to <2 x float>
ret <2 x float> %vcvt.i
; CHECK-LABEL: @test63(
; CHECK: bitcast
; CHECK: uitofp
}
define <4 x float> @test64(<4 x float> %c) nounwind {
%t0 = bitcast <4 x float> %c to <4 x i32>
%t1 = bitcast <4 x i32> %t0 to <4 x float>
ret <4 x float> %t1
; CHECK-LABEL: @test64(
; CHECK-NEXT: ret <4 x float> %c
}
define <4 x float> @test65(<4 x float> %c) nounwind {
%t0 = bitcast <4 x float> %c to <2 x double>
%t1 = bitcast <2 x double> %t0 to <4 x float>
ret <4 x float> %t1
; CHECK-LABEL: @test65(
; CHECK-NEXT: ret <4 x float> %c
}
define <2 x float> @test66(<2 x float> %c) nounwind {
%t0 = bitcast <2 x float> %c to double
%t1 = bitcast double %t0 to <2 x float>
ret <2 x float> %t1
; CHECK-LABEL: @test66(
; CHECK-NEXT: ret <2 x float> %c
}
define float @test2c() {
ret float extractelement (<2 x float> bitcast (double bitcast (<2 x float> <float -1.000000e+00, float -1.000000e+00> to double) to <2 x float>), i32 0)
; CHECK-LABEL: @test2c(
; CHECK-NOT: extractelement
}
define i64 @test_mmx(<2 x i32> %c) nounwind {
%A = bitcast <2 x i32> %c to x86_mmx
%B = bitcast x86_mmx %A to <2 x i32>
%C = bitcast <2 x i32> %B to i64
ret i64 %C
; CHECK-LABEL: @test_mmx(
; CHECK-NOT: x86_mmx
}
define i64 @test_mmx_const(<2 x i32> %c) nounwind {
%A = bitcast <2 x i32> zeroinitializer to x86_mmx
%B = bitcast x86_mmx %A to <2 x i32>
%C = bitcast <2 x i32> %B to i64
ret i64 %C
; CHECK-LABEL: @test_mmx_const(
; CHECK-NOT: x86_mmx
}
; PR12514
define i1 @test67(i1 %a, i32 %b) {
%tmp2 = zext i1 %a to i32
%conv6 = xor i32 %tmp2, 1
%and = and i32 %b, %conv6
%sext = shl nuw nsw i32 %and, 24
%neg.i = xor i32 %sext, -16777216
%conv.i.i = ashr exact i32 %neg.i, 24
%trunc = trunc i32 %conv.i.i to i8
%tobool.i = icmp eq i8 %trunc, 0
ret i1 %tobool.i
; CHECK-LABEL: @test67(
; CHECK: ret i1 false
}
%s = type { i32, i32, i32 }
define %s @test68(%s *%p, i64 %i) {
; CHECK-LABEL: @test68(
%o = mul i64 %i, 12
%q = bitcast %s* %p to i8*
%pp = getelementptr inbounds i8* %q, i64 %o
; CHECK-NEXT: getelementptr %s*
%r = bitcast i8* %pp to %s*
%l = load %s* %r
; CHECK-NEXT: load %s*
ret %s %l
; CHECK-NEXT: ret %s
}
; addrspacecasts should be eliminated.
define %s @test68_addrspacecast(%s* %p, i64 %i) {
; CHECK-LABEL: @test68_addrspacecast(
; CHECK-NEXT: getelementptr %s*
; CHECK-NEXT: load %s*
; CHECK-NEXT: ret %s
%o = mul i64 %i, 12
%q = addrspacecast %s* %p to i8 addrspace(2)*
%pp = getelementptr inbounds i8 addrspace(2)* %q, i64 %o
%r = addrspacecast i8 addrspace(2)* %pp to %s*
%l = load %s* %r
ret %s %l
}
define %s @test68_addrspacecast_2(%s* %p, i64 %i) {
; CHECK-LABEL: @test68_addrspacecast_2(
; CHECK-NEXT: getelementptr %s* %p
; CHECK-NEXT: addrspacecast
; CHECK-NEXT: load %s addrspace(1)*
; CHECK-NEXT: ret %s
%o = mul i64 %i, 12
%q = addrspacecast %s* %p to i8 addrspace(2)*
%pp = getelementptr inbounds i8 addrspace(2)* %q, i64 %o
%r = addrspacecast i8 addrspace(2)* %pp to %s addrspace(1)*
%l = load %s addrspace(1)* %r
ret %s %l
}
define %s @test68_as1(%s addrspace(1)* %p, i32 %i) {
; CHECK-LABEL: @test68_as1(
%o = mul i32 %i, 12
%q = bitcast %s addrspace(1)* %p to i8 addrspace(1)*
%pp = getelementptr inbounds i8 addrspace(1)* %q, i32 %o
; CHECK-NEXT: getelementptr %s addrspace(1)*
%r = bitcast i8 addrspace(1)* %pp to %s addrspace(1)*
%l = load %s addrspace(1)* %r
; CHECK-NEXT: load %s addrspace(1)*
ret %s %l
; CHECK-NEXT: ret %s
}
define double @test69(double *%p, i64 %i) {
; CHECK-LABEL: @test69(
%o = shl nsw i64 %i, 3
%q = bitcast double* %p to i8*
%pp = getelementptr inbounds i8* %q, i64 %o
; CHECK-NEXT: getelementptr inbounds double*
%r = bitcast i8* %pp to double*
%l = load double* %r
; CHECK-NEXT: load double*
ret double %l
; CHECK-NEXT: ret double
}
define %s @test70(%s *%p, i64 %i) {
; CHECK-LABEL: @test70(
%o = mul nsw i64 %i, 36
; CHECK-NEXT: mul nsw i64 %i, 3
%q = bitcast %s* %p to i8*
%pp = getelementptr inbounds i8* %q, i64 %o
; CHECK-NEXT: getelementptr inbounds %s*
%r = bitcast i8* %pp to %s*
%l = load %s* %r
; CHECK-NEXT: load %s*
ret %s %l
; CHECK-NEXT: ret %s
}
define double @test71(double *%p, i64 %i) {
; CHECK-LABEL: @test71(
%o = shl i64 %i, 5
; CHECK-NEXT: shl i64 %i, 2
%q = bitcast double* %p to i8*
%pp = getelementptr i8* %q, i64 %o
; CHECK-NEXT: getelementptr double*
%r = bitcast i8* %pp to double*
%l = load double* %r
; CHECK-NEXT: load double*
ret double %l
; CHECK-NEXT: ret double
}
define double @test72(double *%p, i32 %i) {
; CHECK-LABEL: @test72(
%so = shl nsw i32 %i, 3
%o = sext i32 %so to i64
; CHECK-NEXT: sext i32 %i to i64
%q = bitcast double* %p to i8*
%pp = getelementptr inbounds i8* %q, i64 %o
; CHECK-NEXT: getelementptr inbounds double*
%r = bitcast i8* %pp to double*
%l = load double* %r
; CHECK-NEXT: load double*
ret double %l
; CHECK-NEXT: ret double
}
define double @test73(double *%p, i128 %i) {
; CHECK-LABEL: @test73(
%lo = shl nsw i128 %i, 3
%o = trunc i128 %lo to i64
; CHECK-NEXT: trunc i128 %i to i64
%q = bitcast double* %p to i8*
%pp = getelementptr inbounds i8* %q, i64 %o
; CHECK-NEXT: getelementptr double*
%r = bitcast i8* %pp to double*
%l = load double* %r
; CHECK-NEXT: load double*
ret double %l
; CHECK-NEXT: ret double
}
define double @test74(double *%p, i64 %i) {
; CHECK-LABEL: @test74(
%q = bitcast double* %p to i64*
%pp = getelementptr inbounds i64* %q, i64 %i
; CHECK-NEXT: getelementptr inbounds double*
%r = bitcast i64* %pp to double*
%l = load double* %r
; CHECK-NEXT: load double*
ret double %l
; CHECK-NEXT: ret double
}
define i32* @test75(i32* %p, i32 %x) {
; CHECK-LABEL: @test75(
%y = shl i32 %x, 3
; CHECK-NEXT: shl i32 %x, 3
%z = sext i32 %y to i64
; CHECK-NEXT: sext i32 %y to i64
%q = bitcast i32* %p to i8*
%r = getelementptr i8* %q, i64 %z
%s = bitcast i8* %r to i32*
ret i32* %s
}
define %s @test76(%s *%p, i64 %i, i64 %j) {
; CHECK-LABEL: @test76(
%o = mul i64 %i, 12
%o2 = mul nsw i64 %o, %j
; CHECK-NEXT: %o2 = mul i64 %i, %j
%q = bitcast %s* %p to i8*
%pp = getelementptr inbounds i8* %q, i64 %o2
; CHECK-NEXT: getelementptr %s* %p, i64 %o2
%r = bitcast i8* %pp to %s*
%l = load %s* %r
; CHECK-NEXT: load %s*
ret %s %l
; CHECK-NEXT: ret %s
}
define %s @test77(%s *%p, i64 %i, i64 %j) {
; CHECK-LABEL: @test77(
%o = mul nsw i64 %i, 36
%o2 = mul nsw i64 %o, %j
; CHECK-NEXT: %o = mul nsw i64 %i, 3
; CHECK-NEXT: %o2 = mul nsw i64 %o, %j
%q = bitcast %s* %p to i8*
%pp = getelementptr inbounds i8* %q, i64 %o2
; CHECK-NEXT: getelementptr inbounds %s* %p, i64 %o2
%r = bitcast i8* %pp to %s*
%l = load %s* %r
; CHECK-NEXT: load %s*
ret %s %l
; CHECK-NEXT: ret %s
}
define %s @test78(%s *%p, i64 %i, i64 %j, i32 %k, i32 %l, i128 %m, i128 %n) {
; CHECK-LABEL: @test78(
%a = mul nsw i32 %k, 36
; CHECK-NEXT: mul nsw i32 %k, 3
%b = mul nsw i32 %a, %l
; CHECK-NEXT: mul nsw i32 %a, %l
%c = sext i32 %b to i128
; CHECK-NEXT: sext i32 %b to i128
%d = mul nsw i128 %c, %m
; CHECK-NEXT: mul nsw i128 %c, %m
%e = mul i128 %d, %n
; CHECK-NEXT: mul i128 %d, %n
%f = trunc i128 %e to i64
; CHECK-NEXT: trunc i128 %e to i64
%g = mul nsw i64 %f, %i
; CHECK-NEXT: mul i64 %f, %i
%h = mul nsw i64 %g, %j
; CHECK-NEXT: mul i64 %g, %j
%q = bitcast %s* %p to i8*
%pp = getelementptr inbounds i8* %q, i64 %h
; CHECK-NEXT: getelementptr %s* %p, i64 %h
%r = bitcast i8* %pp to %s*
%load = load %s* %r
; CHECK-NEXT: load %s*
ret %s %load
; CHECK-NEXT: ret %s
}
define %s @test79(%s *%p, i64 %i, i32 %j) {
; CHECK-LABEL: @test79(
%a = mul nsw i64 %i, 36
; CHECK: mul nsw i64 %i, 36
%b = trunc i64 %a to i32
%c = mul i32 %b, %j
%q = bitcast %s* %p to i8*
; CHECK: bitcast
%pp = getelementptr inbounds i8* %q, i32 %c
%r = bitcast i8* %pp to %s*
%l = load %s* %r
ret %s %l
}
define double @test80([100 x double]* %p, i32 %i) {
; CHECK-LABEL: @test80(
%tmp = shl nsw i32 %i, 3
; CHECK-NEXT: sext i32 %i to i64
%q = bitcast [100 x double]* %p to i8*
%pp = getelementptr i8* %q, i32 %tmp
; CHECK-NEXT: getelementptr [100 x double]*
%r = bitcast i8* %pp to double*
%l = load double* %r
; CHECK-NEXT: load double*
ret double %l
; CHECK-NEXT: ret double
}
define double @test80_addrspacecast([100 x double] addrspace(1)* %p, i32 %i) {
; CHECK-LABEL: @test80_addrspacecast(
; CHECK-NEXT: getelementptr [100 x double] addrspace(1)* %p
; CHECK-NEXT: load double addrspace(1)*
; CHECK-NEXT: ret double
%tmp = shl nsw i32 %i, 3
%q = addrspacecast [100 x double] addrspace(1)* %p to i8 addrspace(2)*
%pp = getelementptr i8 addrspace(2)* %q, i32 %tmp
%r = addrspacecast i8 addrspace(2)* %pp to double addrspace(1)*
%l = load double addrspace(1)* %r
ret double %l
}
define double @test80_addrspacecast_2([100 x double] addrspace(1)* %p, i32 %i) {
; CHECK-LABEL: @test80_addrspacecast_2(
; CHECK-NEXT: getelementptr [100 x double] addrspace(1)*
; CHECK-NEXT: addrspacecast double addrspace(1)*
; CHECK-NEXT: load double addrspace(3)*
; CHECK-NEXT: ret double
%tmp = shl nsw i32 %i, 3
%q = addrspacecast [100 x double] addrspace(1)* %p to i8 addrspace(2)*
%pp = getelementptr i8 addrspace(2)* %q, i32 %tmp
%r = addrspacecast i8 addrspace(2)* %pp to double addrspace(3)*
%l = load double addrspace(3)* %r
ret double %l
}
define double @test80_as1([100 x double] addrspace(1)* %p, i16 %i) {
; CHECK-LABEL: @test80_as1(
%tmp = shl nsw i16 %i, 3
; CHECK-NEXT: sext i16 %i to i32
%q = bitcast [100 x double] addrspace(1)* %p to i8 addrspace(1)*
%pp = getelementptr i8 addrspace(1)* %q, i16 %tmp
; CHECK-NEXT: getelementptr [100 x double] addrspace(1)*
%r = bitcast i8 addrspace(1)* %pp to double addrspace(1)*
%l = load double addrspace(1)* %r
; CHECK-NEXT: load double addrspace(1)*
ret double %l
; CHECK-NEXT: ret double
}
define double @test81(double *%p, float %f) {
%i = fptosi float %f to i64
%q = bitcast double* %p to i8*
%pp = getelementptr i8* %q, i64 %i
%r = bitcast i8* %pp to double*
%l = load double* %r
ret double %l
}
define i64 @test82(i64 %A) nounwind {
%B = trunc i64 %A to i32
%C = lshr i32 %B, 8
%D = shl i32 %C, 9
%E = zext i32 %D to i64
ret i64 %E
; CHECK-LABEL: @test82(
; CHECK-NEXT: [[REG:%[0-9]*]] = shl i64 %A, 1
; CHECK-NEXT: %E = and i64 [[REG]], 4294966784
; CHECK-NEXT: ret i64 %E
}
; PR15959
define i64 @test83(i16 %a, i64 %k) {
%conv = sext i16 %a to i32
%sub = add nsw i64 %k, -1
%sh_prom = trunc i64 %sub to i32
%shl = shl i32 %conv, %sh_prom
%sh_prom1 = zext i32 %shl to i64
ret i64 %sh_prom1
; CHECK-LABEL: @test83(
; CHECK: %sub = add i64 %k, 4294967295
; CHECK: %sh_prom = trunc i64 %sub to i32
; CHECK: %shl = shl i32 %conv, %sh_prom
}
define i8 @test84(i32 %a) {
%add = add nsw i32 %a, -16777216
%shr = lshr exact i32 %add, 23
%trunc = trunc i32 %shr to i8
ret i8 %trunc
; CHECK-LABEL: @test84(
; CHECK: [[ADD:%.*]] = add i32 %a, 2130706432
; CHECK: [[SHR:%.*]] = lshr exact i32 [[ADD]], 23
; CHECK: [[CST:%.*]] = trunc i32 [[SHR]] to i8
}
define i8 @test85(i32 %a) {
%add = add nuw i32 %a, -16777216
%shr = lshr exact i32 %add, 23
%trunc = trunc i32 %shr to i8
ret i8 %trunc
; CHECK-LABEL: @test85(
; CHECK: [[ADD:%.*]] = add i32 %a, 2130706432
; CHECK: [[SHR:%.*]] = lshr exact i32 [[ADD]], 23
; CHECK: [[CST:%.*]] = trunc i32 [[SHR]] to i8
}
; Overflow on a float to int or int to float conversion is undefined (PR21130).
define i8 @overflow_fptosi() {
%i = fptosi double 1.56e+02 to i8
ret i8 %i
; CHECK-LABEL: @overflow_fptosi(
; CHECK-NEXT: ret i8 undef
}
define i8 @overflow_fptoui() {
%i = fptoui double 2.56e+02 to i8
ret i8 %i
; CHECK-LABEL: @overflow_fptoui(
; CHECK-NEXT: ret i8 undef
}
; The maximum float is approximately 2 ** 128 which is 3.4E38.
; The constant below is 4E38. Use a 130 bit integer to hold that
; number; 129-bits for the value + 1 bit for the sign.
define float @overflow_uitofp() {
%i = uitofp i130 400000000000000000000000000000000000000 to float
ret float %i
; CHECK-LABEL: @overflow_uitofp(
; CHECK-NEXT: ret float undef
}
define float @overflow_sitofp() {
%i = sitofp i130 400000000000000000000000000000000000000 to float
ret float %i
; CHECK-LABEL: @overflow_sitofp(
; CHECK-NEXT: ret float undef
}
define i32 @PR21388(i32* %v) {
%icmp = icmp slt i32* %v, null
%sext = sext i1 %icmp to i32
ret i32 %sext
; CHECK-LABEL: @PR21388(
; CHECK-NEXT: %[[icmp:.*]] = icmp slt i32* %v, null
; CHECK-NEXT: %[[sext:.*]] = sext i1 %[[icmp]] to i32
; CHECK-NEXT: ret i32 %[[sext]]
}
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