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[x86] add tests for store merging; NFC

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This commit is contained in:
Sanjay Patel 2020-09-03 16:26:59 -04:00
parent 9f2ecc6f20
commit c6ad137d8f
1 changed files with 66 additions and 0 deletions
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66
test/CodeGen/X86/stores-merging.ll
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@ -479,6 +479,39 @@ define void @trunc_i32_to_i16(i32 %x, i16* %p) {
ret void
}
define void @be_i32_to_i16(i32 %x, i16* %p0) {
; CHECK-LABEL: be_i32_to_i16:
; CHECK: # %bb.0:
; CHECK-NEXT: movw %di, 2(%rsi)
; CHECK-NEXT: shrl $16, %edi
; CHECK-NEXT: movw %di, (%rsi)
; CHECK-NEXT: retq
%sh1 = lshr i32 %x, 16
%t0 = trunc i32 %x to i16
%t1 = trunc i32 %sh1 to i16
%p1 = getelementptr inbounds i16, i16* %p0, i64 1
store i16 %t0, i16* %p1, align 2
store i16 %t1, i16* %p0, align 2
ret void
}
define void @be_i32_to_i16_order(i32 %x, i16* %p0) {
; CHECK-LABEL: be_i32_to_i16_order:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: shrl $16, %eax
; CHECK-NEXT: movw %ax, (%rsi)
; CHECK-NEXT: movw %di, 2(%rsi)
; CHECK-NEXT: retq
%sh1 = lshr i32 %x, 16
%t0 = trunc i32 %x to i16
%t1 = trunc i32 %sh1 to i16
%p1 = getelementptr inbounds i16, i16* %p0, i64 1
store i16 %t1, i16* %p0, align 2
store i16 %t0, i16* %p1, align 2
ret void
}
define void @trunc_i64_to_i8(i64 %x, i8* %p) {
; CHECK-LABEL: trunc_i64_to_i8:
; CHECK: # %bb.0:
@ -552,3 +585,36 @@ define void @trunc_i64_to_i32(i64 %x, i32* %p) {
store i32 %t2, i32* %p1, align 4
ret void
}
define void @be_i64_to_i32(i64 %x, i32* %p0) {
; CHECK-LABEL: be_i64_to_i32:
; CHECK: # %bb.0:
; CHECK-NEXT: movl %edi, 4(%rsi)
; CHECK-NEXT: shrq $32, %rdi
; CHECK-NEXT: movl %edi, (%rsi)
; CHECK-NEXT: retq
%sh1 = lshr i64 %x, 32
%t0 = trunc i64 %x to i32
%t1 = trunc i64 %sh1 to i32
%p1 = getelementptr inbounds i32, i32* %p0, i64 1
store i32 %t0, i32* %p1, align 4
store i32 %t1, i32* %p0, align 4
ret void
}
define void @be_i64_to_i32_order(i64 %x, i32* %p0) {
; CHECK-LABEL: be_i64_to_i32_order:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: shrq $32, %rax
; CHECK-NEXT: movl %eax, (%rsi)
; CHECK-NEXT: movl %edi, 4(%rsi)
; CHECK-NEXT: retq
%sh1 = lshr i64 %x, 32
%t0 = trunc i64 %x to i32
%t1 = trunc i64 %sh1 to i32
%p1 = getelementptr inbounds i32, i32* %p0, i64 1
store i32 %t1, i32* %p0, align 4
store i32 %t0, i32* %p1, align 4
ret void
}