Subzero: Be more strict about i1 calculations.

tests_lit/llvm2ice_tests/test_i1.ll

+; Tests various aspects of i1 related lowering.
+
+; RUN: %llvm2ice -O2 --verbose none %s \
+; RUN:   | llvm-mc -triple=i686-none-nacl -x86-asm-syntax=intel -filetype=obj \
+; RUN:   | llvm-objdump -d --symbolize -x86-asm-syntax=intel - | FileCheck %s
+; RUN: %llvm2ice -Om1 --verbose none %s \
+; RUN:   | llvm-mc -triple=i686-none-nacl -x86-asm-syntax=intel -filetype=obj \
+; RUN:   | llvm-objdump -d --symbolize -x86-asm-syntax=intel - | FileCheck %s
+; RUN: %llvm2ice --verbose none %s | FileCheck --check-prefix=ERRORS %s
+; RUN: %llvm2iceinsts %s | %szdiff %s | FileCheck --check-prefix=DUMP %s
+; RUN: %llvm2iceinsts --pnacl %s | %szdiff %s \
+; RUN:                           | FileCheck --check-prefix=DUMP %s
+
+; Test that xor with true uses immediate 1, not -1.
+define internal i32 @testXorTrue(i32 %arg) {
+entry:
+  %arg_i1 = trunc i32 %arg to i1
+  %result_i1 = xor i1 %arg_i1, true
+  %result = zext i1 %result_i1 to i32
+  ret i32 %result
+}
+; CHECK-LABEL: testXorTrue
+; CHECK: xor {{.*}}, 1
+
+; Test that trunc to i1 masks correctly.
+define internal i32 @testTrunc(i32 %arg) {
+entry:
+  %arg_i1 = trunc i32 %arg to i1
+  %result = zext i1 %arg_i1 to i32
+  ret i32 %result
+}
+; CHECK-LABEL: testTrunc
+; CHECK: and {{.*}}, 1
+
+; Test zext to i8.
+define internal i32 @testZextI8(i32 %arg) {
+entry:
+  %arg_i1 = trunc i32 %arg to i1
+  %result_i8 = zext i1 %arg_i1 to i8
+  %result = zext i8 %result_i8 to i32
+  ret i32 %result
+}
+; CHECK-LABEL: testZextI8
+; match the trunc instruction
+; CHECK: and {{.*}}, 1
+; match the zext i1 instruction
+; CHECK: movzx
+; CHECK: and {{.*}}, 1
+
+; Test zext to i16.
+define internal i32 @testZextI16(i32 %arg) {
+entry:
+  %arg_i1 = trunc i32 %arg to i1
+  %result_i16 = zext i1 %arg_i1 to i16
+  %result = zext i16 %result_i16 to i32
+  ret i32 %result
+}
+; CHECK-LABEL: testZextI16
+; match the trunc instruction
+; CHECK: and {{.*}}, 1
+; match the zext i1 instruction
+; CHECK: movzx
+; CHECK: and {{.*}}, 1
+
+; Test zext to i32.
+define internal i32 @testZextI32(i32 %arg) {
+entry:
+  %arg_i1 = trunc i32 %arg to i1
+  %result_i32 = zext i1 %arg_i1 to i32
+  ret i32 %result_i32
+}
+; CHECK-LABEL: testZextI32
+; match the trunc instruction
+; CHECK: and {{.*}}, 1
+; match the zext i1 instruction
+; CHECK: movzx
+; CHECK: and {{.*}}, 1
+
+; Test zext to i64.
+define internal i64 @testZextI64(i32 %arg) {
+entry:
+  %arg_i1 = trunc i32 %arg to i1
+  %result_i64 = zext i1 %arg_i1 to i64
+  ret i64 %result_i64
+}
+; CHECK-LABEL: testZextI64
+; match the trunc instruction
+; CHECK: and {{.*}}, 1
+; match the zext i1 instruction
+; CHECK: movzx
+; CHECK: and {{.*}}, 1
+; CHECK: mov {{.*}}, 0
+
+; Test sext to i8.
+define internal i32 @testSextI8(i32 %arg) {
+entry:
+  %arg_i1 = trunc i32 %arg to i1
+  %result_i8 = sext i1 %arg_i1 to i8
+  %result = sext i8 %result_i8 to i32
+  ret i32 %result
+}
+; CHECK-LABEL: testSextI8
+; match the trunc instruction
+; CHECK: and {{.*}}, 1
+; match the sext i1 instruction
+; CHECK: shl [[REG:.*]], 7
+; CHECK-NEXT: sar [[REG]], 7
+
+; Test sext to i16.
+define internal i32 @testSextI16(i32 %arg) {
+entry:
+  %arg_i1 = trunc i32 %arg to i1
+  %result_i16 = sext i1 %arg_i1 to i16
+  %result = sext i16 %result_i16 to i32
+  ret i32 %result
+}
+; CHECK-LABEL: testSextI16
+; match the trunc instruction
+; CHECK: and {{.*}}, 1
+; match the sext i1 instruction
+; CHECK: movzx [[REG:.*]],
+; CHECK-NEXT: shl [[REG]], 15
+; CHECK-NEXT: sar [[REG]], 15
+
+; Test sext to i32.
+define internal i32 @testSextI32(i32 %arg) {
+entry:
+  %arg_i1 = trunc i32 %arg to i1
+  %result_i32 = sext i1 %arg_i1 to i32
+  ret i32 %result_i32
+}
+; CHECK-LABEL: testSextI32
+; match the trunc instruction
+; CHECK: and {{.*}}, 1
+; match the sext i1 instruction
+; CHECK: movzx [[REG:.*]],
+; CHECK-NEXT: shl [[REG]], 31
+; CHECK-NEXT: sar [[REG]], 31
+
+; Test sext to i64.
+define internal i64 @testSextI64(i32 %arg) {
+entry:
+  %arg_i1 = trunc i32 %arg to i1
+  %result_i64 = sext i1 %arg_i1 to i64
+  ret i64 %result_i64
+}
+; CHECK-LABEL: testSextI64
+; match the trunc instruction
+; CHECK: and {{.*}}, 1
+; match the sext i1 instruction
+; CHECK: movzx [[REG:.*]],
+; CHECK-NEXT: shl [[REG]], 31
+; CHECK-NEXT: sar [[REG]], 31
+
+; Test fptosi float to i1.
+define internal i32 @testFptosiFloat(float %arg) {
+entry:
+  %arg_i1 = fptosi float %arg to i1
+  %result = sext i1 %arg_i1 to i32
+  ret i32 %result
+}
+; CHECK-LABEL: testFptosiFloat
+; CHECK: cvtss2si

[jvoung (off chromium), 2014/09/08 18:06:38]

cvtt now?

[Jim Stichnoth, 2014/09/08 18:17:44]

Done.

+; CHECK: and {{.*}}, 1
+; CHECK: movzx [[REG:.*]],
+; CHECK-NEXT: shl [[REG]], 31
+; CHECK-NEXT: sar [[REG]], 31
+
+; Test fptosi double to i1.
+define internal i32 @testFptosiDouble(double %arg) {
+entry:
+  %arg_i1 = fptosi double %arg to i1
+  %result = sext i1 %arg_i1 to i32
+  ret i32 %result
+}
+; CHECK-LABEL: testFptosiDouble
+; CHECK: cvtsd2si

[jvoung (off chromium), 2014/09/08 18:06:38]

cvtt?

[Jim Stichnoth, 2014/09/08 18:17:44]

Done.

+; CHECK: and {{.*}}, 1
+; CHECK: movzx [[REG:.*]],
+; CHECK-NEXT: shl [[REG]], 31
+; CHECK-NEXT: sar [[REG]], 31
+
+; ERRORS-NOT: ICE translation error
+; DUMP-NOT: SZ